Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

DMA SPEED PROBLEM!

I have system with 3 SDRAM controllers 1'st is x16 SDRAM for storing code and data (MAIN_SDRAM) 2,3 is x8 for video memory (V1_SDARM,V2_SDRAM) All SDRAMs...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Yes i understand that ideas.

And I think all of them can't speed up transfer murch more higer than 33 mb/sec

Because DMA don't use burst mode but processor can use it (i saw in timing diagram)

In burst mode x8 SDRAM transfer will be 70-80 mb/sec

Is it possible to enable burst mode during DMA transfer ?